Ask your own question, for FREE!
Mathematics 13 Online
OpenStudy (helpmeplease14):

Help

OpenStudy (helpmeplease14):

@BloomLocke367 help

OpenStudy (anonymous):

i dont see crap

OpenStudy (bloomlocke367):

I'd take the tax out, subtract 1.50, then add the tax in again

OpenStudy (helpmeplease14):

K

OpenStudy (helpmeplease14):

So subtract 31.80 from 4.00 and add 1.5

OpenStudy (anonymous):

The answer is c

OpenStudy (helpmeplease14):

I poor that but I got it wrong

OpenStudy (anonymous):

subtract 4.00 from 31.8 and then add 2.5 which will then equal to 30.3

OpenStudy (anonymous):

you only add the 2.5 because it says the tax was included in the total

OpenStudy (helpmeplease14):

I got it wrong

OpenStudy (helpmeplease14):

My teacher says it's b but idk how

OpenStudy (anonymous):

31.8 -4.00 =27.8 (here i subtracted the incorrect 4.00 from the total which includes the tax) 27.8+ 2.5= 30.3 the answer can't be 30.21 if tax was already included

OpenStudy (helpmeplease14):

Idk

OpenStudy (helpmeplease14):

Lemme ask @Michele_Laino

OpenStudy (helpmeplease14):

What do u think @Michele_Laino

OpenStudy (michele_laino):

If I call with c the cost with no tax, the I can write: \[c + 0.06 \times c = 31.8\] what is c?

OpenStudy (helpmeplease14):

30.30

OpenStudy (michele_laino):

no, I got c=30

OpenStudy (michele_laino):

now, we have to subtract 1.5 from c, since 1.5 is the difference 4-2.5 so we have: c-1.5=30-1.5=...?

OpenStudy (helpmeplease14):

I got 28.5

OpenStudy (helpmeplease14):

These are the choices

OpenStudy (michele_laino):

ok!, Now we have to add the tax, to 28.5, so we have: \[28.5 + 0.06 \times 28.5 = ...?\]

OpenStudy (michele_laino):

@HelpMePlease14

OpenStudy (helpmeplease14):

30.21

OpenStudy (helpmeplease14):

Oh thx

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!